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201 lines
8.8 KiB
XML
201 lines
8.8 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="xdg_activation_v1">
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<copyright>
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Copyright © 2020 Aleix Pol Gonzalez <aleixpol@kde.org>
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Copyright © 2020 Carlos Garnacho <carlosg@gnome.org>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice (including the next
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paragraph) shall be included in all copies or substantial portions of the
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Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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</copyright>
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<description summary="Protocol for requesting activation of surfaces">
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The way for a client to pass focus to another toplevel is as follows.
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The client that intends to activate another toplevel uses the
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xdg_activation_v1.get_activation_token request to get an activation token.
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This token is then forwarded to the client, which is supposed to activate
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one of its surfaces, through a separate band of communication.
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One established way of doing this is through the XDG_ACTIVATION_TOKEN
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environment variable of a newly launched child process. The child process
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should unset the environment variable again right after reading it out in
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order to avoid propagating it to other child processes.
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Another established way exists for Applications implementing the D-Bus
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interface org.freedesktop.Application, which should get their token under
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activation-token on their platform_data.
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In general activation tokens may be transferred across clients through
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means not described in this protocol.
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The client to be activated will then pass the token
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it received to the xdg_activation_v1.activate request. The compositor can
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then use this token to decide how to react to the activation request.
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The token the activating client gets may be ineffective either already at
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the time it receives it, for example if it was not focused, for focus
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stealing prevention. The activating client will have no way to discover
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the validity of the token, and may still forward it to the to be activated
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client.
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The created activation token may optionally get information attached to it
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that can be used by the compositor to identify the application that we
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intend to activate. This can for example be used to display a visual hint
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about what application is being started.
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Warning! The protocol described in this file is currently in the testing
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phase. Backward compatible changes may be added together with the
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corresponding interface version bump. Backward incompatible changes can
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only be done by creating a new major version of the extension.
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</description>
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<interface name="xdg_activation_v1" version="1">
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<description summary="interface for activating surfaces">
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A global interface used for informing the compositor about applications
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being activated or started, or for applications to request to be
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activated.
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</description>
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<request name="destroy" type="destructor">
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<description summary="destroy the xdg_activation object">
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Notify the compositor that the xdg_activation object will no longer be
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used.
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The child objects created via this interface are unaffected and should
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be destroyed separately.
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</description>
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</request>
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<request name="get_activation_token">
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<description summary="requests a token">
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Creates an xdg_activation_token_v1 object that will provide
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the initiating client with a unique token for this activation. This
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token should be offered to the clients to be activated.
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</description>
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<arg name="id" type="new_id" interface="xdg_activation_token_v1"/>
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</request>
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<request name="activate">
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<description summary="notify new interaction being available">
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Requests surface activation. It's up to the compositor to display
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this information as desired, for example by placing the surface above
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the rest.
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The compositor may know who requested this by checking the activation
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token and might decide not to follow through with the activation if it's
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considered unwanted.
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Compositors can ignore unknown activation tokens when an invalid
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token is passed.
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</description>
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<arg name="token" type="string" summary="the activation token of the initiating client"/>
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<arg name="surface" type="object" interface="wl_surface"
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summary="the wl_surface to activate"/>
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</request>
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</interface>
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<interface name="xdg_activation_token_v1" version="1">
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<description summary="an exported activation handle">
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An object for setting up a token and receiving a token handle that can
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be passed as an activation token to another client.
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The object is created using the xdg_activation_v1.get_activation_token
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request. This object should then be populated with the app_id, surface
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and serial information and committed. The compositor shall then issue a
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done event with the token. In case the request's parameters are invalid,
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the compositor will provide an invalid token.
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</description>
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<enum name="error">
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<entry name="already_used" value="0"
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summary="The token has already been used previously"/>
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</enum>
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<request name="set_serial">
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<description summary="specifies the seat and serial of the activating event">
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Provides information about the seat and serial event that requested the
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token.
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The serial can come from an input or focus event. For instance, if a
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click triggers the launch of a third-party client, the launcher client
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should send a set_serial request with the serial and seat from the
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wl_pointer.button event.
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Some compositors might refuse to activate toplevels when the token
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doesn't have a valid and recent enough event serial.
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Must be sent before commit. This information is optional.
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</description>
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<arg name="serial" type="uint"
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summary="the serial of the event that triggered the activation"/>
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<arg name="seat" type="object" interface="wl_seat"
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summary="the wl_seat of the event"/>
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</request>
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<request name="set_app_id">
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<description summary="specifies the application being activated">
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The requesting client can specify an app_id to associate the token
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being created with it.
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Must be sent before commit. This information is optional.
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</description>
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<arg name="app_id" type="string"
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summary="the application id of the client being activated."/>
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</request>
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<request name="set_surface">
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<description summary="specifies the surface requesting activation">
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This request sets the surface requesting the activation. Note, this is
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different from the surface that will be activated.
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Some compositors might refuse to activate toplevels when the token
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doesn't have a requesting surface.
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Must be sent before commit. This information is optional.
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</description>
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<arg name="surface" type="object" interface="wl_surface"
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summary="the requesting surface"/>
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</request>
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<request name="commit">
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<description summary="issues the token request">
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Requests an activation token based on the different parameters that
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have been offered through set_serial, set_surface and set_app_id.
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</description>
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</request>
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<event name="done">
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<description summary="the exported activation token">
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The 'done' event contains the unique token of this activation request
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and notifies that the provider is done.
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</description>
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<arg name="token" type="string" summary="the exported activation token"/>
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</event>
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<request name="destroy" type="destructor">
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<description summary="destroy the xdg_activation_token_v1 object">
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Notify the compositor that the xdg_activation_token_v1 object will no
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longer be used. The received token stays valid.
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</description>
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</request>
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</interface>
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</protocol>
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